Blade sharpener



Oct. 14, 1941.

v. AlELLo, sR

BLADE SHARPENER Filed Jan. so, 1959 N 2 sheets-sheet 1 UNED-tml" VHIEIID 51".

H ttm T HEHE oct. 14, 1941. f' v MELLQ, SR 2,259,095

BLADE SHARPENER Filed Jan. 30, 1959 2 Sheets-Sheet 2 Y f a i Inval-rtm1"l VEIEIID '51".

Bital-HEHE Patented Oct. 14, 1941 nie-iran stares PATENT cornice Y,

Venry Aiello, Sr., Kenosha, Wis., assignorrof ,one- .Y

third to Arthur K. Slack, Kenosha,' Wis. y

Application January so, 1939, serial No. .25a-,46c

1 claim. 01. rei-,822i l This invention appertains to sharpeners, and more particularly to a novel universal device for sharpening bladed instruments, such as knives, shears, scissors, etc.

On of the primary objects of my invention is to provide a device in which the blade to be sharpened can be readily and quickly set to the proper and desired angle relative to the reciprocatory sharpening member, whereby the blade can be accurately sharpened, even by a lay person.

Another salient object of my invention is to provide means whereby when the clamp is initially set for one blade of a pair of scissors or shears, or for one side of a knife relative to the sharpening member, such setting does not have to be changed for the other blade of the scissors or the other side 0f the knife, so that the sharpening canbe quickly accomplished.

A further important object of my invention is the provision of a universal sharpening device for scissors and knives embodying means whereby a sharpening member can be reciprocated and accurately guided over the edge to be sharpened, with means whereby files of standard characters can be easily and iirmly clamped on the reciprocating member.

A still further object 01 my invention is to provide a sharpening device cf the above character, which will be durable and eiiicient in use, f

one that will be simple and easy to manufacture, and one which can be placed upon the market at a reasonable cost.

With these and other objects in view, the invention consists in the novel construction, arrangement, and formation of parts, as will be hereinafter more specifically described, claimed, and illustrated in the accompanying drawings, in which ldrawings Figure 1 is a side elevational View of my novel device, showing the same set up for sharpening a pair of scissors, parts of the View being shown broken away and in section to illustrate structural details.

Figure 2 is a top plan View of my improved device, showing the same adjusted and set for sharpening a pair of scissors, parts of this view being also shown broken away and in section.

Figure 3 is an enlarged, detail, sectional view taken on the line 3 3 of Figure 2, looking in the direction cf the arrows, illustrating the novel clamp for the scissors.

Figure 4 is a sectional view taken on the line 4 4 of Figure 3, locking in the direction of the arrows, illustrating the clampl for the scissors.

`sit'ion from either side of the device. nut I4 is threaded on the bolt for bringing the Figure l5 is anenlarged, detail, transverse, sectional vie-w through the operating handle, illustrating .the single means employed for Irigidly connecting a le and vthe' .guide membenthereto.

rFigure 6 -is a side elevational View ofmy .novel 'device set .up and .adjusted for sharpening a knife. l

Figure 7 Sis an enlarged, detail, fragmentary, sectional View taken on the line 1-1 of Figure 6, looking in 4the direction vof the arrows, illustrating the clamp for the knife..

Figure 8is a detail, perspective view of a devicegwh'ich '.can be utilized for detachably connecting the frame vof .the Sharpener to a table or other' .desired .support Referring to the drawings in detail, wherein `similar vreference characters designate :corresponding parts 'throughout the several views, Vthe letterv D generally indicates my novel universal .sharpening device, which includes .an open frame `IIJ .of .a substantially V-shape in plan.

The frame l0 can .be cast in .the desired form, or the frame can be constructed in any lother preferred manner. Projecting forwardly from thefframe Ill is ,a pair of `spaced parallel arms lil, Awhich .are apertured for the reception of a transversely extending .clamping andV pivot bolt l2. The bolt adjacent its head is provided with an'integral key or 'extension t3 for engaging ina groove or socket formed inthe arms, whereby the bolt can be held against turning moven ment. As the socket or slot is formed in both of the arms ll,`the bolt i2 can be placed in po- A winged arms Il toward and Vaway from one another, as will be later set forth.

"I'he frame' l0 can be rigidly securedto a work bench, tabla'or other support I5, such as through .the use of screws I6, which canextend through 'the 'fraine and into the support. If preferred, a

clamp .I7 `:(shown in Figure 8) can be utilized in lieu of the screws l6.` ThisY clamp is of a U-shape in side elevation, and its upper leg can be secured to the frame by screws, rivets, or the like, and, as illustrated, the upper leg of the clamp and frame is'provided with mating openings for the reception of such fastening elements. The lowerleg of the clamp l1 carries an'adjustable 'screw i8 for engaging the lower face of the table Vor other support with which the frame Iis associated.

The frame I 0 is utilized for carrying and supporting a bladelclamp I9 and a support 20 for 55 thefoperating device 2|.

The blade clamp I9 is particularly adapted for use when scissors or the like are being sharpened, and this blade clamp includes a pair of companion jaws 22 and 23. The jaws 22 and 23 are provided with companion, transversely alined, hinge barrels 24 and 25, which are mounted on the hinge bolt I2 between the arms II of the frame. Particular attention is invited to the fact that the jaw 22 has certain of its hinge barrels 24 disposed on the outside of the clamp and bolt the hinge barrels 25 of the jaw 23, and, thus, the arms II are adapted to engage and hold the outermost hinge barrels 24 of the jaw 22. This allows movement of the jaw 23, whereby blades can be positioned between the jaws 22 and 23 and then rmly clamped.

The inner vface of the jaw 22 is'p'rovided with a scissor blade groove or seat 26, and this seat terminates short of one end of the jaw to pro vide a rest 21, which conforms to the curvature of the outer blunt edge of a scissor blade, whereby shifting movement of the scissor blade in the rest is prevented. Obviously, when the jaw 23 is brought into clamping position with the blade, the blade will be rmly held against movement.

Any desired means can be provided for adjusting the jaw 23 toward the jaw 22, and, as illustrated, the jaw 22 carries an arcuate threaded bolt 2B, which extends through an opening in the jaw 23. Threaded upon the bolt 28 is a winged nut 29, which engages the jaw 23, and by threading up the nut on the bolt, the jaws can be held in their desired adjusted relation.

From the construction so far, it can be seen that both of the jaws 22 and 23 can be swung on the bolt I2 to a desired angular position, so that the blade being sharpened can be held at the proper angle, and that after such adjustment has been reached and the winged nut I4 has been tightened so as to move the arms II into clamping engagement with the jaw 22, the jaw 23 can be opened or closed for permitting the changing of the scissor blades therein.

The support 20 for the operating device 2| may, in the present instance, include a short threaded rod 39, which is adapted to be threaded into a socket 3I formed in the frame I0. The upper end of the rod is vflattened and bifurcated to form spaced, parallel pivot ears 32, between which is received the forward end of a guide rod 33. This end of the guide rod has formed thereon an eye, and a pivot pin or bolt 34 extends through the eye and ears 32,V whereby the guide rod is pivotally connected to the said rod. As the rod is free to turn in its socket, the guide rod 32 is mounted for universal movement.

The operating member 2l includes the guide rod 33 and an elongated guide sleeve 35 for receiving the rod. This guide sleeve 35 has formed on its outer end a shank 36, which is adapted to rest on one face of an arm 31 formed on the forward end of the operating handle 38. The operating handle is provided with a socket 39 in which is removably fitted the tang 49 of a file 4I. This iile is also adapted to engage the upper face of the arm 31 of the handle.

Detachably mounted upon the arm 31 of the handle is an open clamp loop 42, which is adapted to engage over the handle arm 31, the tang 4|] of the le 4I, and the shank 36 of the guide tube 35. This loop 42 carries an adjusting screw 43, and, obviously, by turning on the set screw 43, the guide sleeve of the tube 35 and le 4I can be rmly and rigidly secured to the handle. As the parts can be disconnected by merely turning the screw 43, les of different neness can be connected with the handle without difiiculty.

In use of my improved device, the jaws 22 and 23 are loosened and the selected blade of a pair of scissors S is placed on the seat 25, after which the winged nut 29 is tightened. The blade clamp I9 in its entirety is swung back and forth on the bolt I2 until the file rests correctly on the cutting edge of the blade, after which the winged nut I4 is firmly tightened. This will hold the clamp I9 against accidental swinging movement, and by grasping the handle 38, the le can be reciprocated back and forth and gradually swung over the scissor blade.

After the rst scissor blade has been sharpened, the winged nut 29 is loosened, and the blade of the scissors is removed from the clamp without changing the angle of the clamp. The other blade of the scissors, which has not been sharpened, is now placed in the seat 26, and the nut is again tightened. The le is again reciprocated and brought across this blade of the scissors until it is sharpened.

In Iorder to bring about the sharpening of knife blades to the best advantage, I prefer to utilize a special clamp, indicated by the reference character 5D, and a special support 5I for the operating member 2|.

The clamp 59 is somewhat along the line of the clamp I9 in that the same includes movable jaws 52 and 53, having hinge barrels which are mounted on the pivot bolt I2, as the jaws of the clamp I9. In the clamp 59, the jaws extend a greater distance from the Vbolt I2, and the jaw 5B has a knife seat 54, which extends entirely across the jaw, and the jaw 52 is provided with a forwardly extending face 55, which is adapted to extend into the seat 54. The jaws 52 and 53 are adjusted by means of a bolt 55 carried by the jaw 53, and which slidably extends through the jaw 52. A winged nut 51 is threaded on the bolt 56.

The support 5! is similarto the support 30, but the same extends a relatively great distance above its frame I9 and above the clamp 59. Thus, the le extends downwardly at an angle toward the clamp 50 and the knife K to be sharpened. The knife blade is clamped between the jaws 52 and 53 by means of the nut 51 and the bolt 56, and the clamp is swung on its bolt I2 in such a manner that the knife will be held at a proper angle for the file to rest thereon. Upon the tightening of the nut I4 of the bolt I2, the clamp 50 will be firmly held against movement, and the blade of the knife can be quickly sharpened. After one edge of the knife has been sharpened, the nut 51 is loosened, and the position of the blade is reversed in the clamp and the nut 51 is again tightened. This side of the knife is then sharpened without changing the initial setting of the clamp 50.

From the foregoing description, it can be seen that I have provided an exceptionally simple device for bringing about the eflicient sharpening of bladed instruments, such as scissors, knives,

etc.

Changes in details may be made without departing from the spirit or the scope of my invention, but what I claim as new is:

A sharpening device comprising, a frame, means for securing the frame to a support, a supporting rod connected to the frame, a guide rod pivotally secured to the supporting rod, a guide tube reciprocally mounted on the guide rod, an operating handle connected with the tube, a sharpening member connected with the tube and handle, a pair of spaced parallel arms on the frame, a transversely extending pivot bolt extending through and connecting said arms having a head on one end engaging the iouter surface of one arm, and a nut threaded on the other end of the bolt for engaging the outer surface of the other arm, a blade clamp including a pair of companion jaws having hinge barrels rockably mounted on the bolt, whereby the jaws can be adjusted relative to one another, and whereby the clamp as a unit can be adjusted on the bolt 10 to-the innermost jaw.

VENRY AIELLO, SR. 

